Serena Williams says on social media that she gave birth to a baby girl named Alexis Olympia Ohanian Jr.

The tennis star posted about the birth on her Instagram and Twitter accounts.

She says the baby was born on Sept. 1 and weighed 6 pounds, 14 ounces. One posting also says about the newborn, "Grand Slam Titles: 1."

The 35-year-old Williams won her 23rd Grand Slam singles title at the Australian Open in January - while she was pregnant.

Auction of Items Linked to Late Princess Diana Winding Down

Online bidding is winding down for dozens of items with direct connections to Britain's late Princess Diana.

Eighty items being sold at auction 20 years after her death in a Paris car crash include articles of clothing, jewelry, signed papers and photographs. There's even a piece of her wedding cake still stored in a commemorative box.

Auction house executive vice president Bobby Livingston says interest in Diana memorabilia remains high because "she still resonates all over the world." He says the items "give you a little snapshot into this beautiful woman's life."

The items include belongings Diana donated to charity months before her death on Aug. 31, 1997.

Bidding began last week.

Serena Williams says on social media that she gave birth to a baby girl named Alexis Olympia Ohanian Jr.

The tennis star posted about the birth on her Instagram and Twitter accounts.

The 35-year-old Williams won her 23rd Grand Slam singles title at the Australian Open in January - while she was pregnant.

Auction of Items Linked to Late Princess Diana Winding Down

Online bidding is winding down for dozens of items with direct connections to Britain's late Princess Diana.

Eighty items being sold at auction 20 years after her death in a Paris car crash include articles of clothing, jewelry, signed papers and photographs. There's even a piece of her wedding cake still stored in a commemorative box.

Auction house executive vice president Bobby Livingston says interest in Diana memorabilia remains high because "she still resonates all over the world." He says the items "give you a little snapshot into this beautiful woman's life."

The items include belongings Diana donated to charity months before her death on Aug. 31, 1997.